yuánzhuī qūxiàn

== Mandarin == === Romanization === yuánzhuī qūxiàn (Zhuyin ㄩㄢˊ ㄓㄨㄟ ㄑㄩ ㄒㄧㄢˋ) Hanyu Pinyin reading of 圓錐曲線 / 圆锥曲线